[sdiy] eh mini synth 0400

[Antonio Tuzzi]

Hello sdiy,

Sorry for the bandwidth, but I need some help here...


MY  PROBLEM:

I received a mini synth electro harmonix 0400.

no sound is coming out. I can hear some filter resonance acting when 
the phase is on, but nothing more.

I'd like to known the names of the ICs used in the synth

there are 3 8 pin dual in line packet (like a tl082)

and
2 14 pins dual in line.

I'd like ton know also the positions! (maybe if you have a pdf of the 
schematics and adjustments!)

I've already changed all the electrolytics caps. Checked all the tracks 
for continuity .

My guess is that the VCO part is not working, I can hear the filter 
working and also the vca is working.
the keyboard is working too

thank you for your time

Antonio Tuzzi